I am at the point of preparing the ribs for the HS and noticed that unlike many of the build site pics, the flanges of my ribs are notched so they seem to lay flat if you force them with minimal effort. I assume this is something that Vans has started doing on the more recent -9 kits. I fluted most of them until I realized that mine are not like other folks. I clecoed two of them to the skins and the holes seem to sign up quite well. I was just wondering if anyone had any input into this.. As always, thanks.....